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ADP5052 View Datasheet(PDF) - Analog Devices

Part Name
Description
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ADP5052 Datasheet PDF : 40 Pages
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ADP5052
Data Sheet
Pin No.
33, 34
35, 36
37
38
39
40
41
42
43
44
45
46
47
48
Mnemonic
SW1
PVIN1
EN1
SS12
COMP1
FB1
RT
VDD
SYNC/MODE
VREG
FB3
COMP3
SS34
EN3
EPAD
Description
Switching Node Output for Channel 1.
Power Input for the Internal 5.1 V VREG Linear Regulator and the Channel 1 Buck Regulator. Connect a bypass
capacitor between this pin and ground.
Enable Input for Channel 1. An external resistor divider can be used to set the turn-on threshold.
Connect a resistor divider from this pin to VREG and ground to configure the soft start time for Channel 1 and
Channel 2 (see the Soft Start section). This pin is also used to configure parallel operation of Channel 1 and
Channel 2 (see the Parallel Operation section).
Error Amplifier Output for Channel 1. Connect an RC network from this pin to ground.
Feedback Sensing Input for Channel 1.
Connect a resistor from RT to ground to program the switching frequency from 250 kHz to 1.4 MHz. For more
information, see the Oscillator section.
Output of the Internal 3.3 V Linear Regulator. Connect a 1 µF ceramic capacitor between this pin and ground.
Synchronization Input/Output (SYNC). To synchronize the switching frequency of the part to an external clock,
connect this pin to an external clock with a frequency from 250 kHz to 1.4 MHz. This pin can also be configured
as a synchronization output by factory fuse.
Forced PWM or Automatic PWM/PSM Selection Pin (MODE). When this pin is logic high, the part operates in
forced PWM (FPWM) mode. When this pin is logic low, the part operates in automatic PWM/PSM mode.
Output of the Internal 5.1 V Linear Regulator. Connect a 1 µF ceramic capacitor between this pin and ground.
Feedback Sensing Input for Channel 3.
Error Amplifier Output for Channel 3. Connect an RC network from this pin to ground.
Connect a resistor divider from this pin to VREG and ground to configure the soft start time for Channel 3 and
Channel 4 (see the Soft Start section).
Enable Input for Channel 3. An external resistor divider can be used to set the turn-on threshold.
Exposed Pad (Analog Ground). The exposed pad must be connected and soldered to an external ground plane.
Rev. 0 | Page 10 of 40
 

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